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How to select the range of the aluminum dust detector in the deburring room for measuring occupational health?
Date: 2025-12-02Read: 1
Occupational Health MonitoringThe selection of range and equipment will be more focused on this specific requirement. This no longer involves the high range of explosion risk, but rather the pursuit ofAccuracy and compliance within low concentration range.
Core principle: Based on "occupational exposure limits"
China's "Occupational Exposure Limits for Hazardous Factors in the Workplace Part 1: Chemical Hazardous Factors" (GBZ 2.1-2019) stipulates that:
Aluminum metal dustofThe time weighted average allowable concentration (PC-TWA) is 3 mg/m ³.
Aluminum alloy dustofPC-TWA is 4 mg/m ³.
Recommended range and accuracy
| parameter | Recommended Specifications | Instructions |
|---|---|---|
| measurement range | 0 - 20 mg/m³or0 - 50 mg/m³ | Suggest 0-20 mg/m ³This range covers OEL values (3 or 4 mg/m ³) and can capture possible peaks. Excessive range (such as 0-100 mg/m ³) will reduce resolution and accuracy in critical low concentration areas. |
| resolution | 0.01 mg/m³ |
Key points for equipment selection
Fixed-point online monitoring: UseLaser scattering methodLaser scattering method has fast response and is suitable for real-time monitoring; For online monitoring of aluminum dust,Laser scattering methodIt is a cost-effective choice.
Explosion proof requirements remain important：
Even if it is only for health monitoring, the equipment installed in the deburring room must comply with the explosion-proof level of the area and must be selected withEx Explosion proof Certificationequipment
Daily real-time monitoring and warning (recommended)：
At key workstations (such as each deburring workstation), the height of the worker's breathing belt is installedExplosion proof, low range (0-20 mg/m ³), laser scattering dust online monitoring instrument.
These instruments display concentration in real time, and when TWA or instantaneous values exceed the standard, an alarm can be triggered to immediately link local ventilation equipment to strengthen ventilation.
For occupational health monitoring of deburring rooms for aluminum parts, the core in range selection is "low range, high precision, explosion-proof type".
Specific range：0-20 mg/m³It measures the range of occupational health monitoring.
Core instruments：Daily monitoringExplosion proof fixed online dust analyzer (laser scattering method, range 0-20 mg/m ³, resolution 0.01 mg/m ³).
